1. An Opening in the Abdomen An Opening in the Market: Fascia Tensiometers GROUP 2: Martha Ingram Megan Johnston Chelsea Samson

7. Current Contemplations… Consult with Surgeons Observe procedure Preliminary Designs Consult with Dr. Bradshaw Advice Revise/recreate designs New Design Build (machine shop) Create Lab View Risk Assessment Test on materials to be determined to simulate use in OR Assessment Final Product! Test in Surgical Lab Analyze performance Document assessments and improvement goals Present in Spring Showcase for 272/273

9. Our Environment:  20-30cm diameter ~314cm 2  Need to be able to allow needles and forceps to maneuver around device  Sterile  Procedures are not delicate Goals of this Tool:  1 st —research gather data to obtain curve for determining relationship between success rate and fascia tension Tool needs to be easily removable and not impede surgical progress  2 nd —interoperative planning tool Need fast accurate readings with little fluctuation Easily sterilized and reusable given large demands of operative procedure Ease of placement and reading

10. Units? Fascia tension has never been measured Have only vague idea of magnitude of tension Have no concept of units Newtons or pounds force? Eventually want graph of tension and percent recurrence Then units are not important – use graph to make decisions

11. Other Issues Gear system –Crank close –Release system –How much torque? –How big lever arm? Sterilization –Digital display Material –Surgical steel τ = r x F

12. Future Work Meet with Dr. Alan Bradshaw for consultation on gastric mobility Observe hernia repair surgery Continue to finalize initial design Construct first design Design circuit in LabView